Feeler in transferrer arm



R. G. TURNER FEELER IN TRANSFERRER ARM Filed Oct. 21, 1927 .m m w I A H h 2 w. 7% m 1 J, M r W 7 m G W m/ a 1 r a W 0. ml 1 4 4, 0 0 a 42 a 4 Z. s 4 f 4 5 1 4 5 4 f 1 4 1 (r y M .......,...W L .1 w 1 a w J r 4 A 4 k w A afv4. m( U V W 2 M w I 1 z m 1% B H w W a H 3 3 H w a E lfialr H a w. W EF -h 0 m w \\V pa Dec. 18,1928.

Patented Dec. 1928.

'om'ren PATENT} Fries RICHARD G. TURNERyOF W' ORCEST-ER, MASSACHUSETTS, ASSIGNOR T O CROMPTON &-KNO\VLES IlOOIVI WORKS, OF WORCESTER, MASSACHUSETTS; A CORPGRATEON OF MASSACHUSETTS.

FEELER IN TRANSFERRER ARM.

Application filed October 21, 927; Serial No. 227,801.:

This invention relates to improvements in weit't detectors oi the type mounted on means "for preventing the indicating ele'n'ient' from moving accidentally endwise on, the transferrer arm while-at the same time perniitting said element to be moved very easily by the detector.

In Patent No. 1,372,316 to Ryon there is shown a loom having a transfer-rel arm which moves downwardly on every detecting beat of the loom to present the weft detector carried by the arm to the top of the bobbin in the shuttle. The detector is made to slide along a bobbin which is substantially exhausted into engagement with a plunger. The plunger is moved outwardly so that when raised with the transterrer arin it will engage and rock an indicating lever to initia-te replenishment In the term of detector shown'in Patent No. 1 ,551,219 also to Ryon, -the plunger is held in position by a spring detent which enters a co'nical groove formed in the plunger, The plunger is moved by a force derivediirom the detector and it is found that'the spring detent interferes with the proper action of the weft detector in that the spring detent must be HIOVGCl'tO releasing position by the detector beiiorethe plunger can he moved to indicating position. It is an important ob ect of my present invention to provide lightly acting resilient means acting on a cylindrical portion oi? the plunger to hold the san'ie against creeping movement in the trans-terror arm but acting: to permit the weft detector to move said flunger on the first part of the indicating movement thereof.

The lever on whichthe detector is mounted ordinarily is held in raised position by a tension spring interposed between said lever and {iv partv otthe trans'ferrer a-rnnend it is a further object of my invention to u c this sprin to yieidingly hold the plunger in nonind ceting position there being rocking lever between the springan'd the plunger so formedns to tend normally to increase its pressure againstthe plunger the detector descends; thereby preventing nis' .idications by improper nio-veinentsof the .d'etectoix W ith these and others objects in view which will appear as the description proceeds; my invention resides in 'the combinatween said lever and screw 17' ca tion and arrangement of parts hereinafter described and set forth in the claims.

In the accompanyingdrawings wherein I I have shown one embod ment of my inven- 'tion Fig. 1 is a. vertical section taken through a, portion of a transferrer arm having. my inventionapolied'thereto, with the plunger heldin non-indicating position, i I I I Qis aview siinihiii' ,to Fi fl but with the parts moved to indicating position; i

Fig". 3 is a vertical section'on lino 3-301"? g l, and" Fig 2. 7

Referring to the drawings a] tinnsferrefr arm 10 is provided with afheel 11 and'tip 12' to engage respectively the butt and body of a bobbin B.' The transierrer arm is provided with alpai'r of spaced parallel wells 13 which define a vertical slotl ll Extending across said slotis a pin 15 on which is mounted a carrier lever 16 held raised n'o'r nially' by a tension spring; 17 interposedbolby the transferr'er arm. A Wei-renters;- lS" is supported. on. said lever 16 and provided with e'yarn mg "gingroughened lower end 19. Said detector is provided with a hook 20 which bendsover a finger 2i. qideiztends into a. notch 2-2 formed bet-ween said finger and a second finger A COmPIGSSiOII spring; 24 interposed bet shoulder on the detector and, a, washer QS teIids no dis a vertical section-on line 4-4 of l v toiholdthe (letectorin low position. relatively'f to the lever 16. Said detector is gulded between a pairof spaced erins Bound extends upwardly "through a slot 2? formed finthe lever-"16,

Under normal conditions the transferre'r arm is moved downwardly by inechanisni' set forth in. s patents to Eyes; on each detecting beat of the looin and when suilic'ien't yarn'is pr t the detector will engage th'e bobbin and be held again t loiigitudinal nioveinenttherealong, but when ins liic'i'e'nt weft is present the detector slid i bobbin as'indic'ated in 2;

part of the weight thereof: to one side of the pin 15 end as the transferrer arm comes to a sudden stop. in its descent the inertia-off sei d carrier lever will IHOVG'tllG same downlever 16 is so formed as to have the greater Wardly against the-action oi' springlT. The

matter thus far described is the same as set forth in said patents and also in my copending application Serial No. 120,491.

ll ly improvements relate more particularly to the means for controlling the indicating plunger and in carrying my invention into effect I provide a plunger or indicating element 40 which is mounted for free sliding movement in web ll of the transferrer arm extending between the walls 13. The left end of said plunger may be reduced and lie in proximity to the detector as at 4:2. The web is provided with a pocket as and that part of the plunger normally moving in the pocket is reduced as at 44 to define shoulders 45. i i A pin 46 extends between the walls 13 and has pivotally mounted thereon a plunger retaining lever 47 having a depending finger l8 and an upwardly extending arm l9 which is curved to be eccentric with respect to the pin 16. The upper end of said arm 49 is concaved, as shown at 50, Fig. l, and is proportioned to receive a part of the spring 17 at a point lying to the left of the pin 46. The finger a8 rests on a cylindrical portion of the plunger 40, being held there by action of the spring 17 the axis of which is bent as shown in Figs. 1 and 2, to exert downward pressure on the retaining lever 4L7. A tail 51 on the carrier lever 16 engages a portion of the web 41 when the transferrer arm is in its extreme upper position and spring 17 is always under tension. The right end of pocket 43, as shown in Fig. 1, defines a shoulcler 52 which serves as a stop for finger l8.

Under normal conditions the finger 48 exerts downward pressure on the plunger 40 to hold the same against endwise movement in the transferrer arm, the restraint thus exerted increasing as the carrier lever 16 descends relatively to the transferrer arm. When the detector moves along an exhausted bobbin from the position shown in Fig. 1 to that shown in Fig. 2, it engages the end 42 of the plunger and moves the same to .the right until the right hand shoulder 41:5,

defined by the reduced portion a l of the plunger, arrives under the finger 48, at which time said finger will move behind the shoulder and continue the movement of the plunger to the right to the indicating position shown in Fig. 2. The force accomplishing this result is derived from the spring 17 and movement of the finger 48 to the right is arrested by the shoulder :32, and should the plunger continue its movement to the left it will be arrested by the left hand shoulder 45.

From the foregoing it will be seen that I have provided an indicating plunger for a regularly moving loom transferrer arm .which is held against accidental endwise movement by pressure exerted on a cylindrical portion thereof, and that because of the construction set forth the detector is not materially resisted in the first part of its indicating movement. It'will further be seen that the energy which moves the plunger is derived from the same spring as that which holds the carrier lever in raised position.

Having thus described my invention it will be apparent that changes and modifications may be made therein by those skilled in the art without departing from the spirit and scope of the invention and I do not wish to be limited to the details herein disclosed, but what I claim is:

1. In weft detecting mechanism for a loom having a regularly moving transferrer arm with a carrier pivoted thereto provided with a side slipping weft detector which has an indicating movement when the weft is substantially exhausted, an indicating plunger normally in retracted position and located for engagement with the detector when the latter has an indicating movement, a retaining device mounted on the transferrer arm independent of the carrier and having lateral engagement with the plunger, and a single resilient device to hold thecarrier and detector normally raised with respect to the transferrer arm and also to hold the retaining device against the plunger to prevent accidental movement of the latter.

2. In weft detecting mechanism for a loom having a regularly moving transferrer arm with a carrier pivoted thereto provided with a side slipping weft detector which has an indicating movement when the weft is substantially exhausted, a plunger slidably mounted on the transferrer arm and normally retracted and having a portion for direct engagement with the detector when the latter has an. indicating movement, a retaining lever in dependent of the carrier pivoted to the transferrer arm and having a finger to have lateral engagement with the plunger, and a single resilient element operatively connected to the carrier and retaining lever to hold the carrier and detector normally raised and also to hold the retaining lever in engagement with the plunger to prevent accidental movement of the latter.

3. In weft detecting mechanism for a loom having a regularly moving transferrer arm with a carrier pivoted thereto provided with a side slipping weft detector which has an indicating movement when the weft is substantially exhausted, a plunger slidably mounted on the transferrer arm and having a portion for direct engagement with the de tector to be moved endwise by the latter at indication of weft exhaustion, a retaining lever pivoted to the transferrer arm and having a finger normally in engagement with the plunger, and a tension spring interposed between the carrier and a fixed partof the transferrer arm to hold the carrier and detector normally raised, said spring also having engagement with the retaining lever to hold the same yieldingly against the plunger to prevent accidental movement of the latter.

4. In weft detecting mechanism for a loom having a regularly moving transferrer arm with a carrier pivoted thereto provided with a side slipping weft detector which has an indicating movement when the weft is sub stantially exhausted, a plunger slidably mounted in the transferrer arm and located for engagement with the detector when the latter has an indicating movement, a retain ing lever having lateral engagement with the plunger, and a tension spring interposed between the carrier and a fixed part of the transferrer arm effective to hold the carrier and detector normally raised and to exert a force transverse of the length thereof on said retaining lever to hold the latter yieldingly against the plunger to prevent accidental movement of the latter.

5. In weft detecting mechanism for a loom having a regularly moving transferrer arm with a carrier pivoted thereto provided with a side slipping weft detector which has an indicating movement when the weft is substantially exhausted, a plunger slidably mounted in the transferrer arm and positioned for engagement with the detector when the latter has an indicating movement, a retaining lever pivoted to the transferrer arm and having lateral engagement with the plunger, and an expansible resilient device interposed between a fixed part of the transferrer arm and the carrier and normally tending to hold the carrier and detector in raised position, said device increasing in length on a detecting beat of the loom as the carrier and detector move towardthe surface to be detected, said expansible device having contact with and exerting a force transverse of the length thereof against the retaining lever, said force increasing after the resilient device expands at the time the carrier and detector move downwardly relatively to the transferrer arm to exert an increasing retaining force on the plunger to prevent accidental movement of the latter.

6. In weft detecting mechanism for a loom having a regularly moving transferrer arm with a carrier pivoted thereto provided-with a side slipping weft detector which has an indicating movement when the weft is sub stantially exhausted, a plunger slidably mounted on the transferrer arm and located for engagement with the detector at the'time of indication of weft exhaustion, a retaining lever normally having lateral engagement with the plunger, a resilient device to hold the carrier and detector in raised position and also exerting a force against the retaining lever to hold the same against the plunger to prevent accidental movement of mounted on the transferrer arm and located for engagement with the detector when the latter has an indicating movement, a retaining lever pivoted to the transferrer arm and having a finger located for lateral engagement with the plunger, a single spring interposed between a fixed part of the transferrer arm and the carrier and also engaging the retaining lever, said spring normally holding the carrier and detector in raised position and also holding the retaining finger yieldingly against the plunger, and means defining a shoulder on the plunger for cooperation with said finger after the detector has initiated .sliding movement of the plunger to continue the sliding movement by the cooperation of said finger, spring and shoulder.

8. In weft detecting mechanism for a loom having a regularly moving transferrer arm with a carrier pivoted thereto provided with a side slipping weft detector which has an indicating movement vwhen the weft is substantially exhausted, a plunger slidably mounted on the transferrer arm and located for engagement with the detector whenithe latter has an indicatingmovement and being of reduced diameter at a point intermediate .the ends thereof to define spaced shoulders, 'a retaining lever having a finger in lateral engagement with the plunger, a single resilient device interposed between afixed part of the transferrer arm and the carrier and normally holding the carrier and detector in raised position and also engaging the retaining lever to hold the same yieldingly against the plunger, sliding movement of the plunger under influence of the detector bringing one of said shoulders into engagement with the retaining lever so that by cooperation of the single resilient means, said retaining lever and said shoulder the plunger will be continued in its movement, the other of said shoulders acting as a stop to limit endwise movement of the plunger by engagement with said retaining lever.

In testimony whereof I have hereunto aflixed my signature.

RICHARD ernninnn. 

